How to Optimize Prompts for Low-Latency Apps

In real-time apps, every token matters. Optimizing your prompts for brevity and structure can significantly reduce latency and costs.

Token-Efficient Persona Setup

Don't write paragraphs for your persona. Use concise, impactful instructions (e.g., "You are a concise JSON-only coder") instead of long-winded descriptions. Every word you remove from the system prompt is one less token processed on every single request, speeding up the "Time to First Token" (TTFT).

Leveraging Few-Shot Compression

Few-shot examples are great for quality but expensive for latency. Use the "minimum viable examples" needed to get the job done. Often, 2 high-quality examples are more effective and much faster than 10 mediocre ones. Also, consider using "Prompt Caching" to store these examples on the server side for near-zero cost reuse.